[issue20350] Replace tkapp.split() to tkapp.splitlist()

[Terry J. Reedy]

Terry J. Reedy added the comment:

I know split has been troublesome and I am generally in favor of removing semi-duplication. Here are my questions.
What system are you developing and testing on?
Should I try the patch on Windows?
Have you used coveragepy to see if the patched areas are covered by tests?
Have you run Idle with the patch in place (though it does not use tix that I know of)?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20350>
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